Pipe-cleaner.



A. C. EEK.

PIPE CLEANER.

APPLICATION FILED APR.30, 1914.

Patented June 29, 1915.

3 SHEETS-SHEET 3/. 5/ AlB/A C.[/f, I BY I [225 ATTORNEY.

A. C. EEK. PIPE CLEANER. APPLICIIKTION FILED APR. 30. 1914.

Patented June 29, 1915.

M e M a AWW m. 5 T LA 4 A. C. EEK.

PIPE CLEANER.

APPLICATION FILED APR-30. 1914.

3 SHEETS-SHEET 3.

159,5 ATTO Patented June 29, 1915.

' Zwzvvrozz: ALB/N C. ZEK/ ALBIN C. EEK, 0F WEBSTER GROVES, MISSOURI, ASSIGNOR, BY llLiESNE ASSIGNMENTS,

TO ESSANESS MANUFACTURING COMPANY, OF ST. LOUIS, MISSOURI, A CORPORA- TION OF MISSOURI. v

Lil i-4,759.

PIPE-CLEANER.

Patented June 29, 1915.

Application filed April 30, 191E. fieiial No. 886,581.

To all whom it may concern.

Be it known that I, ALP-IN C. EEK, a citizen of the United States, residing at the city of Webster Groves, in the county of St. Louis and State of Missouri, have invented certain new and useful Improvements in Pipe-Cleaners, of which the following is a specification.

My invention relates to improvements in that class of pipe cleaner used particularly for removing the scale from the outside of ammonia condenser pipes and the like, and consisting principally of a cylinder made in halves longitudinally which are jointed to each other hinge-wise at one side of .the cylinder and separably locked together at the opposite side along their respective meeting edges, for enabling the :halves of the cylinder to be readily placed and subsequently "closed around the pipe to be cleaned, the

cylinder carrying circular cutters which are revolilble in a plane inclined to the axis of the cylinder and having their peripheral cutting edges projecting within the cylinder for engaging the scale on the pipe, so that, on rotation of the cylinder, the spiral action of the cutters in their passage throughthe scale will cause the cylinder to travel along the pipe. Combined with the cylinder is a member adapted to support the same and to travel therewith in the longitudinal direction of the pipe, the said member carrying means for rotating the cylinder around the pipe, and for preventing the rotation of the said member around the cylinder.

My invention consists in features of novelty in connection with the various parts of the pipe cleaner above-mentioned, as hereinafter particularly described and claimed, reference being had to the accompanying drawing forming part of this specification, wherein like numbers of reference denote like parts wherever they occur, and, Figure 1 is a front elevation of my im proved pipe cleaner; Fig. 2 is an inside face view of the left-hand half of the cylinder a verticallongitudinal section on the line 5-, Fig. 3, of the tubular arm or bracket pro ecting from the cylinder support, showmg means for regulating the distance bctween theouter roller and the corresponding side of the upper pipe seen in Fig. 1; Fig. 6 1s a vertical transverse section through the same on the line 66, Figs. 1 and 5, show ing means for locking the outer roller in the vertical or horizontal position; Fig. 7 is an end View, on an enlarged scale, corresponding .to Fig. 4, of the cylinder (broken away) showing the device for tightly closing and locking the halves of the cylinder when in position around the pipe to be cleaned; Fig. 8 is .a longitudinal section on the line 8-8,

Fig. 3, through the pawl for, locking the.

cylinder to its supporting member while placing the cylinder in position around the pipe to be cleaned; Flg. 9 is a vertical transverse section on the line 99, Fig. 1, lookers and the like are arranged comparatively close and parallel to each other and connected together at the ends for which reason the pipe cleaner is preferably adapted to be placed around the pipe to be cleaned from the side of the latter thereby obviating the necessity of disconnecting the end of the pipe.

Referring generally to Figs. 1 to 4, 1 represents a cylinder or drum which is preferably made in halves l longitudinally, the halves 1' being jointed to each other hingewise along their meeting edges at one side of the cylinder 1, by pins 3 which pass through lugs 2, 2', projecting from the said edges respectively, preferably at each end thereof, While the halves 1' are tightly closed and locked together at the opposite side of the cylinder 1 by a suitable locking device 4:

(hereinafter particularly described) one at each end of the cylinder 1, which is adapted to engage a joint pin 3 carried by lugs 5 which project from the edge thereat of one of the halves 1 of the cylinder 1 and are adapted to engage in corresponding concavities 5 formed in the edge of the other half 1, so that, in the closed position of the halves 1, the inner and outer cylindrical surfaces of the cylinder 1 are practically continuous circumferentially, the meeting edges of the halves 1' being so shaped that on releasing the locking devices 41 from the pins 3 the halves 1 are separable and movable outward from each other about their hinges 3, as indicated by dotted lines in Fig. 1, whereby the cylinder 1 can be readily adjusted to and closed around the pipe 6 to be cleaned, and subsequently removed therefrom without the necessity of disconnecting the ends of the latter.

Each locking device consists preferably of an arm or catch 7 pivoted on the fulcrum pin 8 of a locking lever 9 of the first kind, andformed at its other or free end with a hook'lO which is adapted to pass over and engage the joint pin 3 of the halves 1 as indicated by dotted lines in Fig. 7, the fulcrum pin 8 passing horizontally through and movable along two opposite slots 8 which are formed transversely through the side walls 11 of a recess 11' (seen to the left in Fig. 3, the device being omitted therefrom) which is formed in the circumferential part of the cylinder 1 for receiving the catch 7 and the lever 9, the latter comprising a short arm 12 having its free end rounded and extending from the fulcrum 8 toward the oint pin 3, and an operating arm 13 which extends partly around the cylinder 1 normally within the recess 11, through which, adjacent to the joint pin 3, is an opening 1 1 having on its wall between the rounded end of the lever 9 and the joint pin 3 a friction plate 15 which in the normal position of the parts as shown by full lines in Fig. 7, is just clear of the said end, the whole operating so that, when the catch 7 is thrown into engagement with the joint pin 3 and the lever S) outward into the dotted positions, by pressing upon and returning the lever 9 to its normal position the rounded end of its short arm 12 will bear hard against the friction plate 15, and in so doing constrain the fulcrum pin 8 into the dotted position and thereby cause the hook 10 of the catch 7 to pull transversely on and tightly close the meeting edges of the halves 1'. of theeylinder 1.

Through the cylindrical wall preferably of each end portion of the cylinder 1, are formed a series of openings 16 which, in the present case, are preferably three in number, equidistant from each other around the cylinder 1, and in each opening 16 are mounted side by side in a plane inclined to the axis of the cylinder a series of circular cutters 17, preferably four as shown, which are freely revoluble on a shaft 18 arranged parcentral hub and thence tapering to its periphery which forms a cutting edge, the cutters 17 being so arranged that their cutting edges project within the cylinder 1 sufiiciently for cutting through the scale 6 as far as the outer surface of the pipe 6, so that, on rotating the cylinder 1, as hereinafter more particularly referred to, the spiral action of the inclined cutters 17 will cause the cylinder 1 to travel along the pipe 6. v

For initially breaking up and removing enough scale 6 from the pipe 6 to allow the cylinder or drum 1 to pass thereover, a series of cutters 20 are'adjustably fixed to the cylinder 1 at suitable intervals around and in advance of its front end, the cutting edges 20' of each cutter '20 extending inward as far as or approximately to the outer surface of the pipe 6, and its outer cutting edge 20 extending sufficiently far for removing any abnormal deposit of scale on the succeeding-pipe 21 above or on the succeeding pipe (not shown) below the pipe 6. Furthermore, a series of scrapers 22 are fixed to the cylinder 1 at suitable intervals around its rear end (Fig. 4), the scraping edge 22 of each scraper 22 extending inward as far as the outer surface of the pipe 6 for completely removing the remaining scale therefrom.

For holding the axle 18 of each series of circular cutters 17 in place within its bearings or notches 19, and at the same time allowing a resilient adjustable movement 17, and in this connection, also, screws 25 are threaded into the periphery of the said end portion adjacent to the notches 19, the heads of the screws 25 overlapping the fiattened. portions of the axis'l8 thereat and thereby preventing undue outward play thereof. Furthermore, I preferably use in combination with each series of circular cutters 17, a cleaning device consisting of a plate 27 which is secured at one end to the bottom of the peripheral recess 24 between the "bifurcated branches of the resilient plate 23 and formed with teeth 28 which correspend in shape with and project into the spaces between 'the'cutters 17, and between their peripheral cutting edges and central hub, whereby any accumulation of scale and consequent'clogging-of thecutte'rs 17 is obviated.

Suitable openings 29 are formed through the cylindrical wall of the cylinder '1 for allowing the scale removed 'fromthe'pipe 6 by the-circularcutters 17 toescape from the interiorofthe cylinder 1. I

For supp0rting=andenabling the cylinder 1 to be rotated around the pipe "6 to be cleaned,-the cylinder 1 is formed circumferentially adjacent to each end portion thereof with a circular projecting rib 30 (Fig. 2) which is preferably T-shaped in cross section and adapted to freely revolve within a correspondingly shaped recess 30 formed-in the inner face of a practically semi circular yoke 31,'the said face, 'and'reces's 30 radially corresponding to the radius of the circumferential surface of the cylinder'l between its end portions and that of the rib 3O respec tively. Projecting rearwardly from each yoke 31 is a leg 32, the two legs 32 being united to each other at a suitable distance from'the cylinder 1 by a cross-bar 32 which with the legs 32 straddles the middle portion of the cylinder 1 thereat between the yokes 31. On the outer or rear side of the cross bar 32 is an elongated projecting hub 33 through which passes and has its bearing a shaft 34 having its longitudinal center inter-- sectional with the axis of the cylinder 1. On the inner end of the shaft 34 between the cross-bar 32 and the outer surface of the cylinder 1 is fixed preferably, a bevel pinion 35 which is adapted to engage in a bevel 36 made in halves which are preferably integral with (but may be separate from and fixed to) the correspondinghalves 1', respectively, of the cylinder 1 and form, when the latter is tightly closed, a continuous gearing around the same, while on the other or outer end of the shaft 34 is fixed a sleeve 37 having a series of longitudinal grooves 37 in its circumference at an equal distance apart so as to form ratchet-teeth 38 which are adapted to be engaged by a pawl 38 carried by a angles to the shaft 34 between the crossbar 32 of the supporting member 32, 32, and the handle or lever 39, a slidable bar 40 which is arranged 'fi'atwise against the outer face of the cross-bar 32, in the hub 33 of the said member passing through a longitudinal slot in the bar 40 and freely through a held in the desired position against supporting member 32, 32", and on turning the nut 42 in the opposite direction the bar 40 is I released from the said member and by means of its slot 40 can be raised or lowered or rotated and adjusted about the hub 33 in any desired direction.

From the inner side of the bar 40 near its upper end (assuming the parts to be in their relative positions as shown) projects a horizontal bracket 43 having a vertically projecting pin 44 on which is axially mounted and freely revoluble in a vertical plane, a roller 45 which by adjusting the bar 40 as before described, is arranged opposite to and circumferentially approximately in contact with one side ofthe succeeding pipe 21 above the pipe 6 to be cleaned. From the inner side of the bar 40 at its upper end above the roller 45 projects a horizontal bracket 46 having a vertically projecting pin 47 on which is axially mounted and rotatably adjustable, a sleeve 48 carrying on one side a horizontally arranged tubular arm 49 (see particularly Figs. 5 and 6) through which is adapted to slide longitudinally a circular spindle 50 which projects beyond one end of the arm 49, and on this projecting portion of the latter is fixed a T-shaped connection 51 having a projecting pin 52 at right-angles to the arm 49 and spindle 50, and on the pin 52 is axially mounted a roller 53 which is opposite to the roller 45 and approximately in contact with theother side of the succeeding pin 21 above the pipe 6, whereby, when rotating the cylinder '1 by the handle or lever 39. owing to the rollers 45 and 53 bearing against the pipe 21, and the bar 40 rigidly held to the supporting member 32, 32, the latter with its appendages is prevented from rotating around the cylinder 1.

For adjusting the roller 53 to varying thickness of scale (if any) on the upper pipe 21, the spindle 50 is formed at its inner end, which in the position of the roller 53 previously described bears against a shoulder 54 around the inside of the arm' 49," with a diametrically reduced screw-threaded shank 50' which projects beyond the other end of the arm 49, the outer end of the shank 50 having a handle 55. On the screw-threaded shank 50 is a correspondingly threaded i recess 56 of suitable length in the direction of the shank 50', the sleeve 56 being turned along the'shank 50 for a suitable distance within the arm 49 until the inner or farthest end of the groove 56 is in position for engagement by the corresponding side of a pin or screw 57 inserted through the wall of the arm '49 into the groove 56' as shown in Fig. 5. Around the shank 50 between the inner end of the sleeve 56 and the shoulder 54 within the arm 49 is a spiral spring 58 which normally forces and retains the inner end of the spindle .50 against the shoulder 54, or with the roller 53 in the position shown, but when the latter in traveling along the'pipe 21 encounters an increased L thickness of scale thereon, it is forced outward, and in so doing the spindle 50 with its shank 50 is correspondingly moved and causes the sleeve 56 to compress the spring 58 to the limit allowed by the pin 57 within the groove 56,or until the thickness of the scale is'reduced and allows the roller 53 to be returned by the spring 58 to its original position. Furthermore, in case of an initially abnormal thickness of scale on the pipe 21, by turning the shank 50"by its handle through the'sleeve 56 and with it the spindle 50 and roller 53 until the latter is the desired distance from the pipe 21, the distance between the rollers 45 and 53 may be increased. The roller 53 is held in the vertical position as shown preferably, by a bolt or pawl 59 which is arranged within a socket 60 formed in the inner end of a circular box 61 projecting from one side of the arm 49, the corresponding end of the bolt 59, which passes through an opening in the said side, engaging in a groove 62 formed longitudinally in the periphery of the spindle 50. 'On the bolt 59 is a collar 59, and between the latter and the bottom of the socket 60 is a spiral spring 63 which normallyholds the bolt 59 in engagement with the spindle 50 and thereby locks the roller 53 in the vertical position. On the outer end of the bolt 59, which projects through the bottom of the socket 60 beyond the outer end of the box 61, is fixed a circular cap or handle 64 which whenthe bolt 59 is in engagement with the spindle 50, fits partly within and bears upon the outer end of the box 61, whereby, when it is necessary to place the roller 53 in the horizontal position for enabling it to be initially passed between. the succeeding pipe (not shown) above the pipe. 21 and the latter, previous to its adjustment. in the vertical position at the side of the pipe 21, by pulling the handle 64 against the spring 63, the bolt 59 is withdrawn from engagement with the spindle 50 and the latter, with the roller 53 then turned until the roller 53 is horizontal, when the bolt 59 being released it is forced by the spring 63 into engagement with a second groove 62' formed longitudinally in the periphery of the spindle 50 at an angle of 90 from the groove 62, thereby lockingthe roller 53 in the horizontal osition.

A locking device 65 simi ar to the springbolt and box 59, 61, for the spindle 50, and therefore needing no further description, projects from the sleeve 48 carrying the arm 49, for enabling the sleeve 48 with the arm 49 to be locked in the position shown, or to be partly rotated and locked with the arm 49 in a position parallel to the pipe 21 in Further lieu of at right-angles thereto. more, a locking device 66 (Figs. 1, 3, and 8) projects from one of the yokes 31 for locking the cylinder 1 thereto while placing the latter in position around the'pipe to be cleaned, the locking device 66 being similar to the spring-bolt and box 59, 61, before described, excepting that the outer cap 64 to which the bolt 59 is fixed is formed internally with a projection 67, which when the bolt 59 is released and thrown by its spring 63 into engagement with a socket 59 in. the cylinder 1, engages in a correspondingly shaped slot 67 in the wall of the box 61 and thereby locks the cylinder 1 to the yokes 31, a

similar slot 67 being formed in the said wall diametrically opposite to the slot 67, so that, on partly rotating the cap 64 when the bolt 59' is withdrawn from engagement with the cylinder 1, the projection 67 rides on the outer edge of the box 61' and thereby holds the bolt 59' in its disen aged position. A shallow depression 68 is, a so, preferably formed in the said edge intermediate to the slots 67, 67 and adapted for engagement by the projection 67 for locking the cap 64 and so positively obviating accidental looking of the cylinder 1 during its rotation.

Referring particularly to Figs. 9 and 10, it is to be noted that, the pawl 38 for engaging the ratchet teeth 38 of the sleeve 37 fixed on the drive shaft 34, projects from a circular block or piston 69 which is slidable within a cylindrical chamber or housing 7 O projecting from the hub 39 of the handle or lever 39, and closed at its outer end by a circular cover 71. From the block 69 projects a bolt 72 which passes through the cover 71 and through a circular cap or bush 73 rotatable around and slidable partway along the cover 71, the outer end of the bolt 7 2 being fixed to an outer circular cap 7 3' which normally bears endwise against and is rotatable and slidable partway on the cap 73. Around the bolt 72 between the block 69 and the inner face of the cover 71 is a spiral spring 75 and between the caps 73, 73', a spiral spring 7 5' In the outer face of the cover 71 is a circular socket 76 which when the pawl 38' is in engagement with the ratchet-teeth 38 as shown in Fig. 9 for rotating the shaft 34 and cylinder lto the right, or in the forward direction as indicated by the arrowsaseen in Figs. 9, 1, and 4, respectively, with the heel a: of .the pawl 38 .just clear of the teeth 38 for allowing the beveled end of the pawl 38 to ride idly over the teeth 38 on rotation of the handle or lever 39 to the left, is engaged by a pin 77 projecting from the inner face of the cap 73, which in this position of the pawl 38 is sufliciently clear of .the cover 71 as shown, and therebyholds the pawl 38 in its said engagement, but when it is desired to=rotate the shaft 3& and cylinderl in either direction, the cap 73 is pulled outwardso as to withdraw and disengage the pin 77 from the socket 76, and the cap 73 then partly rotated until its pin 77 engages in a second socket 76 (Fig. 10) formed in the cover 71 at a suitable distance from and deeper than the socket 7 6 whereby owing to the resilience of the spring 75, the pawl 38 is thrown farther into engagement with the ratchetteeth 38, or so that its heel w engages therewith, whereby the shaft 34 and cylinder 1 can be rotated in either the forward or reverse direction. When desired to rotate the shaft 3 1- and cylinder l'to the left reverse direction only, the outer cap 73 to which the bolt 72 is fixed is pulled outward against the spring until the pawl 38 is withdrawn from the teeth 38 when by partly r0- tating the cap 73 and with it the pawl 38 through a semicircle or 180 the pawl 38 will be reversed or moved into-position for engaging the teeth 38 in the opposite direction, when by releasing the cap 73 and adj ustin g the cap 73 as before, the operation is the same as described when rotating the shaft 34 and cylinder 1 to the right. From the outer face of the cap 73 projects a pin 77' which is adapted to engage ineither of a series of sockets 78 (preferably four atan'an'gle of apart as shown) for gaging or determining the position of the pawl 38 and looking it therein. the spring 7 5 operating to retain the cap 73 in place while adjusting-the outer cap 73, and to force the pin 77 on the cap 73 into engagement with the sockets 7 6, and 7 6, respectively. along the outside of the leg 32-01? the cylinder supporting member andintegral therewith, is a lug 79 which is adapted forthe attachment thereto of a suitable motor.

I claim:

1. In a pipe cleaner of the classdescribed, the combination with a cylinder revoluble' around thepipe, of a circular cutter axially mounted in the wall of and projecting partly into'the cylinder, a resilient member fixed to the said wall and adapted to bear on the axis of the said cutter, and positive means on the cylinder for engagement therewith for limiting the outward movement of said cutter. I

2. In a pipe cleaner of the class descrioed, the combination with a cylinder revoluble Projecting from each yoke 31 around the-pipe, of a series of diametrically equal'circular cutters axia 'mountedparallel to each other'side by si e in the'wallof and projecting partly into the cylinder and a member fixed to the saidwall and adapted to project-between-theisaid cutters in approximate engagement with the sides and peripheral :cutting edges thereof for maintaining the cutters clean.

' 3. In a pipe cleaner of the class described, the combination with a cylinder :revoluble around the pipe, of a'cutter adjustably fixed to the front end of the cylinder and having its cutting edge in advance of the said 'end and projecting inwardbeyond the wall of the cylinder toward the said pipe.

In a pipe cleaner of the class described, the combination with a cylinder revoluble around the pipe, of: a cutter adjustably fixed to the front end of the cylinder and having two cuttingedges, one of the said edges projecting beyond the wall of the cylinder inward toward the said pipe, and the other edge projecting beyond the said wall butward toward a succeeding pipe.

5. In a-pipe cleaner of the class described, the combination with a cylinder 'revoluble around the pipe, of a scraper adjustably fixed-to the rear endof the cylinder and-having its scraping edge projecting'beyond the wall of the cylinder toward the said pipe.

6.111 arpipe cleaner of the class described, the combination with 'a cylinder revoluhle around the pipe, of cutting means carried by'the cylinder, and scraping means carried bythe cylinder and projecting beyond the end thereof inwardly for engagement with the pipe to be scraped and following the said cutting means.

7. In a pipe cleaner, the combination with a cylinder rotatable about the pipe, of a supporting member for the cylinder, a drive shaft :journaled in the supporting member and operatively connected to the cylinder for-rotating the mine, a-ratchet on the shaft. a lever revoluble about the ratchet, a pawl carried by the lever and adapted to-engage with the ratchet, nleans for adjusting the pawl for engaging the teeth onmovement of the lever when rotating the lever in :onedirotation and riding idly over the ratchet teeth on movement-ofthe lever'in the oppositedirection, and means for adjusting the pawl to engage positively the ratchet teeth on movement of the lever -in either direction.

'8. In a pipe cleaner, the combination with a cylinder rotatable about the pipe, of a supportingmember for the cylinden'a drive shaft journaled in the supporting member and operatively connected to the cylinder for'rotating the same, a ratchet on the shaft, a lever 'revoluble about the ratchet, a pawl with the ratchet, and means for selectively ratchet, to engage operatively the ratchet on swinging of the lever in one direction only,

or to engage operatively the ratchet on movement of the lever in either direction.

9. In a pipe cleaner, the combination with a cylinder rotatable about the pipe, of a supporting member for the cylinder, a drive shaft journaled in the supporting member and operatively connected to the cylinder for rotating the same, a ratchet on the shaft, a lever revoluble about the ratchet, a pawl carried by the lever and adapted to engage with the ratchet, means for selectively adjusting the pawl to free the same of the ratchet, to engage operativelv the ratchet.

on swinging of the lever in one direction only, or to engage operatively the ratchet on movement of the lever in either direction, and means for reversing the position of the pawl relatively to its engagement with the ratchet teeth. v

10. In a pipe cleaner, the combination with a cylinder rotatable about the pipe, of a. supporting member for the cylinder, means for rotating the cylinder, a bar adjustably carried by the supporting member, adjustably spaced members carried by the bar and adapted to straddle a succeeding pipe, and means for moving one of sai spaced members to a plane parallel to the said pipes for facilitating the positioning and removal of the cleaner.

11. In a pipe cleaner of the class described, the combination with a cylinder revoluble around the pipe, of a supporting member adapted to carry and permit of the rotation of the cylinder, while preventing the same from longitudinal movement relatively to the said member, a drive shaft, a bearing for the said shaft in the said member, a gear wheel fixed on the said shaft, a gear wheel fixed on the cylinder and adapted to be engaged by the first-named wheel, a sleeve fixed on the said shaft, teeth formed in and tively to its engagement with the said teeth..

12. In a pipe cleaner of the class described, the combination with a cylinder revoluble around the pipe, of a supporting member adapted to carry and permit of rotation of the cylinder, means carried by the said member for engaging and rotating the cylinder, a bar carried by the said member atrightangles normally to the axis of the cylinder, two opposite rollers pivotally mounted on projecting parts of the said bar and revoluble in planes parallel thereto, one on each side of and approximate peripherally to a succeeding pipe adjacent to the firstna-med pipe, means for adjusting the distance between the said rollers, and means for movingone of the said rollers into plane parallel to the said pipes.

13-. In a pipe cleaner of the class described, the combination with a cylinder revoluble around the pipe, of a supporting member adapted to carry and permit of rotation of the cylinder, a bar carried by the said mem-, her at right-angles normally to the axis of the cylinder, a roller pivotally mounted on a projecting part of the bar and revoluble in a plane parallel to the saidbar the said roller being approximate peripherally to one side of a succeeding pipe adjacent to the first-named pipe, a tubular arm carried by and rotatably adjustable longitudinally about the said bar in a plane at right-angles thereto, a spindle slidable within and projecting beyond one end of the said arm, a

pin projecting from the spindle at rightangles thereto, a roller pivotally mounted on the said pin and revoluble in a plane nor-' mally parallel to the first-named roller, and approximate peripherally to the other side of the said succeeding pipe, means for adjusting the distance between the said rollers, and means for moving the last-named roller into a plane at right-angles to its normal position. v

14. In a pipe cleaner of the class described, the combination with a cylinder revoluble around the pipe, of a supporting member adapted to carry the cylinder, a bar carried by the said member, an arm carried by the said bar at right-angles thereto, a spindle slidable within and projecting beyond one .end of the arm, a pin pro ecting from the spindle at right-angles thereto, a roller pivotally mounted on the said pin and revoluble in a plane normally parallel to the said bar and approximate peripherally 'to one side of a succeeding pipe adjacent to the first named pipe, and resilient means for enabling the said roller to be automatically moved outward from the said succeeding pipe by abnormal resistance of scale thereon, and returned to its normal position when said resistance is removed.

15. In apipe cleaner of the class described, the combination with a cylinder revoluble around the pipe, of a supporting member adapted to carry the cylinder, a bar carried by the said member, a tubular arm carried by the said bar at right-angles thereto, a spindle slidable within and projecting beyond one end of the arm, a pin projecting from the spindle at ri ht-angles thereto, a roller pivotally mounte on thesaid pin and revoluble in a plane normally parallel to the said bar and approximate peripherally to one side of a succeeding pipe adjacent to the first-named pipe, a shoulder around the inside of the arm, a screw -threaded shank projecting from the spindle through the other end of the arm, a screw-threaded sleeve engaging and rotatably adjustable on the said shank and having a circumferential groove within the arm, a spring surrounding the said shank between the inner end of the sleeve and the said shoulder, and a pin proj ecting through the wall of the arm into the said groove.

16. In a pipe cleaner of the class described, the combination with a cylinder revoluble around the pipe, of a supporting member adapted to carry and permit of rotation of the cylinder, a bar carried by the said member, and means for adjustably fixing the said bar to the said member in a plane at rightangles to the axis of the cylinder.

17. In a pipe cleaner, the combination with a cylinder rotatable about the pipe, of a supporting member for the cylinder, means for rotating the cylinder, abar carriedbj the supporting member, spaced members carried by the bar and adapted to straddle a succeeding pipe, and 'means for moving one of said spaced members to a plane parallel to the said pipes for facilitating the positioning and removal of the. cleaner.

18. In a pipe cleaner, the combination with a cylinder rotatable about the pipe, of a supporting member for the cylinder,

means for rotating the latter, a bar carried by the member, a roller carried by'the bar,

"an arm swingingly mounted on the bar for extending transversely of a succeeding pipe against which said roller normally bears,

and a member mounted on the free terminal.

of the swinging arm to engage the opposite portion of the succeeding pipe. v

19. In a pipe cleaner, the. combination with a cylinder rotatable about the pipe, of a supporting member for the cylinder, means for rotating the latter, a bar carried by the member, a roller carried by the .bar, an arm swingingly mounted on the bar for extending transversely of a succeeding pipe against which said roller normally bears, and means for holding the arm in any of a plurality of dispositions.

20. In a pipe cleaner, the combination with a cylinder rotatable about the pipe, of a supporting member for the cylinder, means for rotating the latter, a bar carried by the member, a roller carried by the bar, an arm swingingly mounted on the bar for extending transversely of a succeeding pipe against which said roller normally bears, means for holding the arm in any of a plurality of dispositions, and means for securing the last member to the swinging arm in any of a plurality of adjustments.

21. In a pipe cleaner, the combination with a cylinder revoluble about the pipe, of a cutter having its axis mounted in radial bearings provlded in the cylinder and projecting partly into the latter, a resilient member fixed to the said cylinder and adapted to bear on the axis of the cutter, and screw means extending into the radial bearings and adapted to engage with the axis of the cutter to prevent dislodgment of the latter.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

'ALBIN C. EEK.

Witnesses:

WALTER C. Gums NANCY C. THOMAS. 

